Homework Help: Statistics

Posted by Aestas on Tuesday, May 24, 2011 at 2:44pm.

For a population with a mean of (mew) = 50 and a standard deviation of 10, how much error, on average, would you expect between the sample mean (M) and the poulation mean for:
a) a sample of n=4 scores
b) a sample of n=16 scores
c) a sample of n=25 scores

Are the sample mean (M) and population means different? How do you find M? I don't understand this question...Please help me!

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